海洋浮体结构非线性运动响应研究综述

浮体在海面上的运动实质上是一个复杂的非线性运动过程,它们在风浪中的运动存在着许多非线性影响因素,且不同运动形式之间存在的耦合现象也无法用线性动力学进行准确地描述.对各种海洋浮体结构在风浪中的非线性运动响应研究现状进行了总结,对目前所取得的主要研究成果作了简要介绍和述评.着重从风浪中船舶的大幅非线性横摇运动、参数激励耦合非线性运动和SPAR平台在无系泊状态下的垂荡-纵摇耦合运动3个方面,阐述了国内外学者所取得的主要研究成果,并在此基础上提出了未来该领域的研究热点问题.

Overview of nonlinear motion response of floating structures

The movement of floating structures over the sea is a typical nonlinear phenomenon.There are many nonlinear factors affect the floating structures when they are moving in the wind and waves;and the coupling of different forms of motions is difficult to be described accurately with the linear dynamics.A summary of the recent research and a brief introduction of research results about nonlinear motion response of floating structures under the environmental loads is presented.The main prospects of the research works about nonlinear motion response are reviewed in detail in three aspects:large amplitude nonlinear rolling in waves,nonlinear coupling motion by parametric excitation,and heave-pitch coupling motion with no mooring of SPAR platform.At last,on the basis of above overview,some proposals which should be further studied are offered.